Roofing.



L. F. McNALLY.

Roomm- APPLICATION FILED SEPT- 30, I916- Patented Feb. 27, 1917.

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L. F. McNALLY.

ROOFING. APPLICATION FILED SEPI. 30, {916.

Patented Feb. 27, 1917.

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ROOFING.

Specification. of Iietters Patent.

Patented Feb. 27, 1917.

Application filed September 30, 1916. Serial No. 122,953.

To all whom it may concern:

Be it known that I, LEO F. MONALLY, a citizen of the United States, and a resident of New York, borough of. Brooklyn, in the county of Kings and State of New York, have made and invented certain new and useful Improvements in Roofings, of which the following is a specification.

My invention relates to a roofing especially adapted for use upon passenger and freight cars, although equally well suited for use uponbuildings, dwellings, etc.

The employment of protected sheets of steel, which material forms an ideal roofing for car service, makes it essential that the sheets be so joined as to take up and compensate for the weaving and twisting of the roof of the car, which constantly takes place while the car is in motion, this weaving and twisting of the roof having heretofore caused the steel roofing to wear out the rivets or bolts with which the roofing is fastened to the carlines, and in some in stances cause the roofing sheets to become entirely detached from the roof. At the same time, it is necessary that the joints be such as to render the entire construction water-proof and rust-proof.

It is therefore an object of my invention to provide a roofing composed of sections each formed of a protected steel plate, and with the joint between the sections so de vised and constructed that a decided cushioning effect, and the requisite'amount of resiliency, is embodied therein, compensating for the weaving and twisting strains to which a car roofing is ordinarily subjected. A further object is to attain the aforementioned ends in such manner that the roofing material may be easily applied'to a car roof, and when secured in place will form a water-proof and rust-proof construction, capable of withstanding for a long period of years the action of the elements and-the action of acids, cinders, and other foreign material.

A further object is to provide a roofing section ofsuch configuration that when several identical sections are assembled end to end, a water-proof, resilient and effective joint between the several sections may be easily and efficiently accomplished.

embodiment of the invention can be made v within the scope of what is claimed without departing from the spiritthereof.

The preferred embodiment of my invention is disclosed in the accompanying drawings, wherein:

Figure 1 is a fragmental view in perspective of the end of a passenger car having my improved roofing thereon; 1

Fig. 2 is a view in section of a carline illustrating the first step in forming the oint between adjacent sections of the roofing' Fig. 3 is a similar view of a more advanced stage of forming the said joint;

Fig. 4 is a similar view showing the joint after completion;

Fig. 5 is a fragmental view in perspective, illustrating the built-up formation of each roofing section;

Fig. 6 is a view in plan of the top of a passenger car having my improved car roofing thereon; I

Figs. 7 and 8 are plan views of thecadjoining edges of the roofingsections which are located at the sloping ends of the upper deck of the car;

Figs. 9 and 10 are perspective views of the above-mentioned plates, after bending for the formation of the joint extending longitudinally of the upper deck;

Fig. 11 is a .view in perspective of these end sections partially secured together;

Fig. 12 is a similar view with the longitudinal joint between the end sections completed; 1

Fig. 13 is a view in perspective of the two end sections of the upper deck after joining, and subsequent to the bending of their combined ends for forming a joint with the first or initial transverse plate of the upper deck;

Fig. 14 is a fragmental view in perspective, showing the joint between the two end sections and the initial transverse section of the upper deck in a stage of formation.

Fig. 15. is a similar view after the said joint has been completed;

Fig. 16 is a view in side elevation 'of one of the car roofing sections;

Fig. 17 is a similar view of the transverse section of the upper deck which is placed at the forward end thereof.

Fig. 18 is a view in cross section, showing the manner in which the upper protecting coating extends around the edges of the steel plate.

Referring specifically to the several views, each section, as illustrated in Fig. 5, is formed with a steel plate or sheet 20, protected upon its upper or outer surface by a treated fabric covering 21, and upon its lower surface by a protective asbestos covering The coverings are held in place by an adhesive binder, and render the roofing fire-proof, rustproof, and admirably adapted to withstand the combined action of the elements, cinders, and other foreign substance to which a car roof is necessarily exposed.

The rear extremity of each section is bent to form a single upstanding flange 23, while the front extremity of the plate is provided with a double return flange 24, formed with closely spaced side walls 25, and having an anchoring extension 27 projecting from one of the side walls and lying in substantial alinement with the main or body portion 26 of the section. In order to secure the section to the car, the anchoring extensions 27 are securely fastened to the car-lines and their cover plates, by rivets or bolts 28; thus the front extremity of each section is securely fastened to a carline, and the juncture between each section extends 'thereabove. After the front extremity of the section in question has been rigidly secured to thecarline, the rear extremity of the preceding section 18 placed with the upstanding single flange 23 bearing against the double return flange of the secured section, as clearly illustrated in Fig. 2. The upstanding single flange is then bent over and around the side walls of the double flange, as illustrated in Fig. 3, and the single flan e, being approximately twice the length of the double flange, completely houses the same therein. The oint between the two sections is then completed by bending the interfitted front and rear flanges of the two sections over and upon the body portion 26 of the fastened or secured section, the completed joint being illustrated in Fig. 4. The rear extremity of the succeeding section therefore projects above, and completely covers, the anchored extension of the first or preceding section, and the juncturebetween the two sections is such that although a substantial cushioning effect and certain amount of resiliency is incorporated in the joint so as to allow for expansion and contraction of the roof and so as to amply compensate for any weaving or twisting of the roof, the joint itself is water-tight and rust-proof.

The end of the upper deck of a passenger car roof curves sharply downward, and in order to prevent the occurrence of a transverse joint upon the sloping surface, which would form an obstruction resulting in the collection of water and foreign material, and in order that the end plates may be anchored to the center longitudinally extending car line of the upper deck, I provide end sections having a longitudinally extending central joint located directly above the center carline, and with a portion of the joint anchored thereto. In forming the joint between the end sections, the end section A, as illustrated in Fig. 7, is provided with the notch 28, of such size that when the said end plate is bent to form an upstanding single flange, which is subsequently bent upon itself, the return portion- 29 is relatively shorter than the upstanding portion 30. The adjacent longitudinal end section B is provided with the double return flange 31 and the anchoring extension 32, the latter being secured to the center carline by suitable rivets or bolts, or other fastening means (not shown). The transverse edge 3% of the endplate B is cut away adjacent the double return flange 31, so that the edge 35 is offset from the edge 3 1, as illustrated in Fig. 10. The return portion 31 of the double flange 31, and the anchoring-extension 32, are cut away at their front extremity, so that their front edge is offset from the edge 34 of the upstanding portion of the double flange. The offset of the several portions of the said section is such that when the sections A and B are joined as illustrated in Figs. 11 and 12, a continuous extremity 34 is provided for the joined sections, and that portion of the joint section immediately adjacent the said front edge is of but single thickness throughout, whereby an efiicient juncture may be effected between the joined sections and the end transverse section D. The extreme edge of the joined sections A and B is then bent upward to form an upstanding sin gle flange 36, which is anchored to the double return flange 38 of the transverse plate D, in the usual manner.

The end plate E, at the remote extremity of the upper deck of the car, is provided at both ends with a double return flange, as illustrated in Fig. 17, whereby the combined or joined ends of these sections F and G may be properly interlocked and secured to a double flange of the adjacent transverse section E. In some instances, it is desirable to project the fabric covering 21 out beyond the edges of the section, and thus protect the raw edges of the steel plate, an example of this construction being illustrated in Fig. 18.

What I claim is 1. A roofing comprising a plurality of sections each formed with a steel body, the front extremity of each section provided with an anchoring extension, means extending therethrough for rigidly holding each section in place, each section provided with a double return flange adjacent said anchoring extension, and at its remote extremity with a single flange interlocking with the double return flange of the adjacent section, each section provided with protective coatings on said steel body, the said protective coatings extending throughout the said interlocking joints and forming a cushion therein.

2. A car roof formed of steel sections, one extremity of each section anchored in place and provided with a double return flange in front of said anchorage, the remote extremity of each section provided with a flange interlocking with the double return flange of adjacent sections, each section provided upon its exterior surface with a fabric coating, and upon its lower surface with an asbestos coating, the fabric coating projecting beyond the edges of the sections and secured to the under sides thereof, the said asbestos and fabric coatings extending .throughout the said interlocking joints and forming a cushion therefor.

3. A car roof comprising sections extending transversely of the upper deck of the car, said sections provided with protective coatings and with interlocking joints, the end sections of the upper deck of the car roof provided with longitudinally extending joints meeting and secured to the edge of the adjacent transverse sections.

1. In a car roof, the combination of steel sections with protective coatings thereon, the protective'coating upon the upper surface of each section projecting around the edges thereof and secured to the under surface of the section, said sections extending the entire width of the upper deck of the car roof and secured together by transversely extending joints, the end sections curved in conformity to the curve of the end of the upper deck of the car roof and provided with longitudinally extending central joints, the said joints lying above and secured to the center carline at the ends of the upper deck of the car roof.

Signed at New York, borough of Manhattan,- in the county of New York, and State of New York, this 28th day of September, A. D. 1916.

LEO F. McNALLY.

Witnesses H. B. CHAMBERLAIN, A. M. LINDENSTRUTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

